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Convert JS object to JSON string
... easily as that:
var j = {
"name": "binchen"
};
console.log(JSON.stringify(j));
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How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
...query that's used internally connect to a database with psql and supply an extra "-E" (or "--echo-hidden") option and then execute the above command.
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What are the lesser known but useful data structures?
... tries are also an interesting variant, where you use only a prefix of the strings as nodes and otherwise store lists of strings in the nodes.
– Torsten Marek
Feb 1 '09 at 19:16
...
Declaring a custom android UI element using XML
...xtColor"/>
<attr name="extraInformation" format="string" />
</declare-styleable>
</resources>
Notice the use of an unqualified name in the declare-styleable tag. Non-standard android attributes like extraInformation need to have their type declared. Ta...
Class does not implement its superclass's required members
... init, like so:
convenience required init(coder: NSCoder) {
self.init(stringParam: "", intParam: 5)
}
Note the call to an initializer in self. This allows you to only have to use dummy values for the parameters, as opposed to all non-optional properties, while avoiding throwing a fatal error....
How to avoid “if” chains?
...e desire to break out of "part of a function" usually means you do need an extra function.
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Flatten an Array of Arrays in Swift
...hmiBozdag's answer,
1. Methods in public extensions are public.
2. Removed extra method, as start index will be always zero.
3. I did not find a way to put compactMap inside for nil and optionals because inside method T is always [Any?], any suggestions are welcomed.
let array = [[[1, 2, 3], 4], 5...
Add vertical whitespace using Twitter Bootstrap?
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Could you give an example of a valid class string?
– Kolob Canyon
Nov 19 '18 at 17:40
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Backup/Restore a dockerized PostgreSQL database
..._USER=${DB_USER}
- POSTGRES_PASSWORD=${DB_PASSWORD}
- POSTGRES_EXTRA_OPTS=-Z9 --schema=public --blobs
- SCHEDULE=@every 0h30m00s
- BACKUP_KEEP_DAYS=7
- BACKUP_KEEP_WEEKS=4
- BACKUP_KEEP_MONTHS=6
- HEALTHCHECK_PORT=81
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What is the maximum number of characters that nvarchar(MAX) will hold?
...ort for Asian, Arab or Cyrillic languages. Use (N)VARCHAR(x) if you know a string will never be longer than x characters (don't use NVARCHAR(MAX) for a first name - use NVARCHAR(50) or whatever makes sense to you)
– marc_s
Nov 24 '10 at 19:09
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